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-rw-r--r--malloc/obstack.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/malloc/obstack.c b/malloc/obstack.c
index f39b638f58..a192441a49 100644
--- a/malloc/obstack.c
+++ b/malloc/obstack.c
@@ -460,6 +460,7 @@ _obstack_memory_used (h)
 # endif
 #endif
 #if defined _LIBC && defined USE_IN_LIBIO
+# include <libio/iolibio.h>
 # define fputs(s, f) _IO_fputs (s, f)
 #endif